12. Let the "Fibonacci-2" numbers gn be defined as follows: 91 = 2, g2 = 2, and gn+2 = (gn+1)( In) for all n2 1. (b) Show that for all n e N, gn = 2fn .

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### Fibonacci-2 Sequence

**Problem 12:** 

Let the "Fibonacci-2" numbers \( g_n \) be defined as follows:

\[ g_1 = 2 , \quad g_2 = 2 , \quad \text{and} \quad g_{n+2} = (g_{n+1})(g_n) \quad \text{for all} \quad n \ge 1. \]

**(b)** Show that for all \( n \in \mathbb{N} \), \( g_n = 2^{f_n} \).
Transcribed Image Text:### Fibonacci-2 Sequence **Problem 12:** Let the "Fibonacci-2" numbers \( g_n \) be defined as follows: \[ g_1 = 2 , \quad g_2 = 2 , \quad \text{and} \quad g_{n+2} = (g_{n+1})(g_n) \quad \text{for all} \quad n \ge 1. \] **(b)** Show that for all \( n \in \mathbb{N} \), \( g_n = 2^{f_n} \).
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